Mixer or beater



A. G. MITCHELL.

( No Model.)

MIXER 0R BEATER.

Patented May 8, 1894.

Edy/z W/ TNESSES A TTORNEYS.

Ens NATIONAL unucemwme cuuimY.

WASHWG'YON. n. c.

1 UNITED. STATE PATENT OFFICE.

AROBINE C. MITCHELL, OF ENNIS, MONTANA.-

MIXER OR BEATER.

SPECIFICATION forming part of Letters Patent No. 519,584, dated May 8,1894.

Application filed August 4, 1893- To alt whom it may concern/.-

Be it known that I, AROBINE O. MITCHELL, of Ennis, in the county ofMadison and State of Montana, have invented certain new and usefulImprovements in Mixers, or Beaters, of which the following is a full,clear, and exact description. Q

My invention relates to a mixer or beater, and is more especiallydesigned to be used'on the materials or batter of which cake and thelike are made, and the object of the invention is to improve upon theconstruction of the mixer or beater for which Letters Patent were.granted to me December 29, 1891, No. 466,178, it being the prime objectof the invention to provide a means whereby the speed may be increasedor decreased, and whereby the basin may be more readily removed from theframe, and likewise to provide abearing for the piston of the beaterwhich will enable the piston to be operated with the least possibleamount 1of friction, and to lessen the cost of manufacure.

The invention consists in the novelconstruct1on and combination of theseveral parts, as will be hereinafter fully set forth, and pointed outin the claim. 1

Reference is to be had to the accompanying drawings, forming a part ofthis specification, 1n which similar figures and letters of refer-. enceindicate corresponding parts' in all the vlews.

Figure 1 is a side elevation of the improved mixer or beater. Fig. 2 isa vertical transverse section, taken practically on the line 22 ofFig. 1. Fig. 3 is a longitudinal vertical section taken essentially onthe line 33 of Fig. 2. Fig. at is a partial side elevation, showing themanner in which the basin is attached to the frame of the machine; andFig. 5 is a section taken practically on the line 55 of Fig. 3. w i

The frame of the machine consists practically of two uprights 10 and ll,one, of which is longer than the other, and a base 12, connecting theuprights at their lower ends. Within this frame the basin, A, in whichthe material to be beaten is placed is located. The basin rests upon thebase, or upon blocks 13, located on the base, and is held in properposition by means of lugs 14., projected from Serial No. 482.390. (N0an.)

the inner faces of the uprights over the top side edgesof the basin, asshown in Figs. 2

and 3. I The blocks 13 provide space under its central portion 17, whichis squared, as

shown best in Fig. 5. The said shaft is adapted to serve as a fulcrumfor a piston 18, the piston having attached at its lower end the beater19, of any approved construction. The beater usually extends practicallyfrom side to side of the basin, has free movement therein, beingprovided with one or more openings at its center, and the lower end ofthe piston is bifurcated, as shown at 20 in Fig. 3, in order that it mayhave a secure bearing and attach- The central portion of ment to thebeater. the piston is provided with a longitudinal slot 21, and the saidslot, which is rectangular in cross section, is adapted to fit overclosely to the squared section 17 of the shaft. Thus when the upper endof the piston is rocked it will turn with the shaft, the shaft servingas its fulcrum, and the beater may be operated with a minimum offriction. The'piston is prevented from moving in one direction on thesquare section of the shaft, by introducing into the-shaft a key 22. Thebasin is held fixedly in the frame by means of a screw 23, screwedthrough a standard or upright of the frame, and through one side of thebasin, as shown in Figs. 2 and 4:, the said screw being provided with ahandle whereby itmay be readily manipulated. The piston is driventhrough the medium of a shaft 24, journaled in the upper end of thelonger standard 10,

the shaft being provided with a crank arm 25 a pinion 27, which pinionmeshes with a gear 28, located upon a short shaft 29, said shaft beingadapted to be revolved by a crank 30.

When speed is to be obtained the crank is attached to the shaft 29, butwhen power is necessary the crank is placed upon the main shaft 24.

The machine is readily taken apart, that is to say, the basin may bereadily removed, by unscrewing the screw 23 until it is free from thebasin. One of the pins 16 is then taken out of the pivotal shaft 15, andthe shaft is shifted until its round portion passes through the slot ofthe piston. The upper end of the piston is then sprung from its Wristpin, and the piston may be turned downward, in that manner raising thebeater from the basin, leaving the basin free to be withdrawn from theframe. When removing the basin from the frame it is sometimes best notto remove the beater from the basin as above described, but afterspringing the piston from the wrist pin instead of turning the pistondownward it should he slipped from the pivot shaft, thus freeing thebeater from the frame whereupon the beater and basin may be removed fromthe frame together.

Having thus described my invention, I

claim as new and desire to secure by Letters Patent In a'inixer orheater, the combination, with a frame comprising connected standards, abasin removably located within the frame, lugs projecting from thestandards of the frame to an engagement with the basin, and a set screwcarried by the standard and engaging with the basin, of a shaft capableof being shifted, journaledin the standards over the basin, said shaftbeing provided with a squared portion'near its center, a heater locatedwithin the basin, a piston slotted to receive the squared portion of theshaft, said shaft serving as a pivot for the piston, the lower end ofthe piston being attached to the beater, a drive shaft, a removableconnection between the piston and drive shaft, one end of the driveshaft being fitted to receive a crank, a pinion secured upon the driveshaft, a gear engaging with the pinion, and a removable crank by meansof which the gear is operated, substantially as shown and described.

AROBINE C. MITCHELL.

Witn esses WILLIAM MITCHELL, OLIvE SMITH.

